Electric-wire connection.



F. B. THATCHBR.

ELECTRIC WIRE CONNECTION.

APPLICATION FILED 11.31.1907.

INYENI'DE.

PATENTED NOV. 19, 1907.

FREDERICK B. THATCHER, OF PROVIDENCE, RHODE ISLAND.

ELEc'rmc-wmE commcrron.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed January 81. 1907. Serial No. 355.086.

To allwhom it may concern:

Be it known that I, FREDERICK B. THATonER, a citizen of the United States, residing at Providence, in the count of Providence and State of Rhode Islan have in- -vented a new and useful Improvement in Electric-Wire Connections, of which the following is a specification.

This invention has reference to an improvement in electric wire connections used for connecting electric wires to spark plugs, electric bells, batteries or other electric appliances.-

In the use of a variety of electric appliances, including spark plugs, having electric wire connections, it is essential at times to quickly remove the wire from the same to facilitate the detachment of the appliance or spark plug for cleaning or other purposes.

The ob ect of my invention is to improve the construction of electric wire connections for spark plugs or other electric appliances,

whereby the operations of attaching or de-,

tac the wire to the same are facilitated and the wire firmly secured to the appliance without the use of nuts or similar devices.

My invention consists in the peculiar and novel construction of electric wire connections adapted to facilitate the connecting of electric wires to spark plugs, binding posts or similar devices and havi details of construction, as will be more ly set forth herev inafter and claimed.

Figure 1 is a top view of my improved electricwire connection, showing the same in the connected position and electrically connected to an electric wire. Fig. 2 is a side View of the wire terminal member with the wire and upper end of thebinding post connection shown in broken Fig. 3 is a face view of the blank forming the body of the wire terminal member. 4 is a face view of the sprin wire'loop ofie wire terminal member, an Fig. 5 is a vertical side view of the upper end of the binding post connection.

In the drawings, 0 indicates an electric binding. post connection, I) an electric wire terminal connection, and c an electric wire covered with the usual insulating material.

The bin post connection a has an annuinto an annularl rounded lip 7 on the en of the connection, as shown in Figs. 1 and 5, otherwise the connection may be constructed to form a .part of'or be secured to a spark plug, battery or other electrical appliance.

The terminal connection I) consistsof a member 8 constructed from a blank, shown in Fig. 3, stamped from sheet metal and bent to form the semi-cylindrical ortion 9 in one side of which is a slot 10, an from the other side of which extends a strap 11 adapted to pass through the slot 10, a tongue 12 extehdmg outward from the end of the portion 9 and having the holes 13 13 and bent or doubled centrally on itself to form the transverse tubular end 14 and to bring the holes 13 13 into a position to coincide, a rivet 15 in the holes 13 13 for seeming the doubledover parts of the tongue together and a hookshaped portion 16 formed on the end of the tongue 12 by bending the end of the ton ue bac loop member 17 constructed of spring wire of a predetermined len th bent centrally to form a semi-circular end 18 adapted to fit in toward the cylindrical end 14 an a the groove 6 in'the binding post connection a, then toward each other and outward at an the distance across from which is somewhat less than the inner diameter of the end 18-, then inward toward each other to bring the ends together and form the straight portions 20 20 and the opening 21, as shown in Fig. 4, through which the end of the binding post connection a is inserted in making the connection.

The ends 20 20 of the loo member 17 are held in the transverse tub ar end 14 of the member 8, as shown in Figs. 1 and 2, and the member 8 secured to the end of the wire 0 by placing the wire adjacent the end in the cyindrical ortion 9, passing the tongue 12 throu h t e slot 10 and bending it back on itself, ending the end of the wire around the hook-shaped portion 16 and forcing the hook-shaped portion 16 down over the end of the wire against the tongue, as shown in tion I) force the shoulders 14 14 on the loop a art a ainst the s tension of the loo a d all w the semidi iiular end 18 of th ,loop to sna into the groove 6 in the connection a, as s own in Fig. 1 By revers' the operation the wire is quickly released om the connection a and when this connection forms a part of a spark plug, the operation of removing the plug. for cleaning or other purposes is greatly facilitated.

,claim as new and desire to secure by Letters Patent;

1. An electric wire terminal consisting of a member constructed of sheetmetal and shaped to have a semi-cylindrical portion in one side of which is a slot and from the other side of-which extends a strap passing through the slot, a ton e extending outward from the semi-'cylin rical ortion and shaped to have a transverse tu ular end and ahookshaped portion, and. a loop member constructed of spring wire bent to form a semicircular end; a'contracted portion adjacentthe semi-circular end, an openin for insertmg a binding post connection t ough the forming an openin loop and adapted to be secured in the tubu larend of the terminal member.

2. An electric wire terminal b consisting of a member 8 constructed from a sheet metal blank shaped and bent to form a semicylindrical portion 9 in one side of which is a s 0t 10 'and' from the other side of which extends a strap 11 a tongue 12 doubled on itself and she ed to form a transverse tubular end 14', a rivet 15 securing the doubled-over parts of the tongue together, a hook-shaped portion 15 formed on the end of the tongue, and a loop member 17 constructed of spring wire bent centrally to form a semi-circular end" 18, then outward at an angle to form the contracted roimded shoulders 19 19, then inwards toward each other to form the straight portions 20 20 adapted to be held in the tubular end 14 of the member 8 and 21, as described. In testimony w name to this specification in the presence of CHER.

two subscribi'n witnesses.

FRE%)ERICK B. THA Witnesses:

ADA E. HAGERTY, J. A. MILLER.

ereof I have signed my 1 

